毫米波方形波导自由电子激光放大器的数值模拟  

NUMERICAL SIMULATION OF MILLIMETRE WAVE FEL AMPLIFIERS WITH RECTANGULAR WAVEGUIDE

作　　者：王泰春 杨震华 田世洪 丁武 

机构地区：[1]应用物理与计算数学研究所

出　　处：《计算物理》1989年第2期215-227,共13页Chinese Journal of Computational Physics

摘　　要：本文以单粒子理论为基础,推导了方形波导模拟方程组,给出了TE_(mn)和TM_(mn)模的计算公式。计算结果表明,在相同的计算条件下退化一维和一维的结果相同。只计TE_(01)模时与LLNL的结果也比较接近。在考查程序可靠性的基础上用FEL-2-A程序计算、分析了在常数Wiggler条件下,不同线极化形式的Wiggler场及其有关参量、光场的输入功率及其有关参量和电子束参量的改变对输出总功率的影响。这些初步计算结果对低能自由电子激光(FEL)放大器的设计和实验也有一定参考价值。From Single Particle theory, we derived Simulant equations with rectangular waveguide and obtained calculating formulas of TEmn and TMmn mode.Under the same conditions of calculation, it was shown that the results of the reduced one dimension is the same as those of one dimension.Our results are relatively near to LLNL/s when only TE01 mode is considered.With the two dimension code FEL-2-A on the basis of investigating its reliability,we analysed the effect on total output power by wtggler field of different linearly polarized,optical field and electron beam parameters under the conditions of constant wig-gler and different linearly polarized wiggler.These preliminary results will be of some reference value to design and experiment of low energy FEL amplifier.

关 键 词：方形波导 数值模拟 

分 类 号：TN722.32[电子电信—电路与系统]